Model comparison
o1-mini vs Step 2 16k Exp 202412
Step 2 16k Exp 202412 is the stronger model overall, scoring 38.6 to 33.7 on the Noometry Index.
Last verified . 12 shared benchmarks.
StepFunSummary
- They share 12 benchmarks with published results for both. o1-mini scores higher in 3 categories and Step 2 16k Exp 202412 in 5 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 2 16k Exp 202412 leads 24.8 to 8.9.
Side by side
| o1-mini | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | OpenAI | StepFun |
| Noometry Index | 33.7 | 38.6 |
| Released | 2024-09-12 | — |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 39 | 12 |
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Category by category
Coding Step 2 16k Exp 202412 leads
o1-mini: 35.1 (#218), Step 2 16k Exp 202412: 37.9 (#170)
| Benchmark | o1-mini | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | 1362 | 1316 |
| Aider Polyglot | 32.9% | — |
| WeirdML | 36.3% | — |
| LiveBench Coding | 48% | — |
| HumanEval+ | 89% | — |
| MBPP+ | 78.8% | — |
Agentic & Tool Use Not comparable
o1-mini: 24.3 (#112), Step 2 16k Exp 202412: —
| Benchmark | o1-mini | Step 2 16k Exp 202412 |
|---|---|---|
| Cybench | 10% | — |
Reasoning Step 2 16k Exp 202412 leads
o1-mini: 8.9 (#340), Step 2 16k Exp 202412: 24.8 (#140)
| Benchmark | o1-mini | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Hard Prompts | 1333 | 1299 |
| ARC-AGI-2 | 0.8% | — |
| SimpleBench | 18.1% | — |
| ARC-AGI-1 | 14% | — |
| LiveBench Reasoning | 72.3% | — |
| LiveBench Data Analysis | 57.9% | — |
| Epoch Capabilities Index | 135.82 | — |
| LiveBench | 57.8% | — |
Math Too close to call
o1-mini: 33.7 (#168), Step 2 16k Exp 202412: 33.6 (#171)
| Benchmark | o1-mini | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Math | 1358 | 1305 |
| OTIS Mock AIME 2024-2025 | 46.9% | — |
| LiveBench Math | 62% | — |
| MATH Level 5 | 89.2% | — |
| FrontierMath (Feb 2025 set) | 1.7% | — |
Knowledge Too close to call
o1-mini: 34.8 (#180), Step 2 16k Exp 202412: 34.6 (#187)
| Benchmark | o1-mini | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | 1316 | 1279 |
| GPQA Diamond | 62.4% | — |
| Confabulations | 18.6% | — |
Multilingual Too close to call
o1-mini: 43.8 (#177), Step 2 16k Exp 202412: 43.9 (#176)
| Benchmark | o1-mini | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | 1289 | 1290 |
| LMArena Chinese | 1314 | 1331 |
| LMArena Russian | 1283 | 1324 |
| LMArena French | 1292 | — |
| LMArena German | 1278 | — |
| LMArena Japanese | 1245 | — |
| LMArena Korean | 1223 | — |
| LMArena Spanish | 1302 | — |
Instruction Following Step 2 16k Exp 202412 leads
o1-mini: 67.0 (#200), Step 2 16k Exp 202412: 68.1 (#187)
| Benchmark | o1-mini | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | 1304 | 1287 |
| LiveBench Instruction Following | 65.4% | — |
Long Context Too close to call
o1-mini: 40.1 (#156), Step 2 16k Exp 202412: 39.7 (#165)
| Benchmark | o1-mini | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | 1321 | 1307 |
Writing & Preference Step 2 16k Exp 202412 leads
o1-mini: 48.6 (#196), Step 2 16k Exp 202412: 52.5 (#168)
| Benchmark | o1-mini | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | 1317 | 1321 |
| LMArena Creative Writing | 1244 | 1328 |
| LMArena Multi-Turn | 1314 | 1292 |
| Short-Story Creative Writing | 64.9% | — |
| LiveBench Language | 40.9% | — |
Frequently asked questions
Is o1-mini better than Step 2 16k Exp 202412?
Step 2 16k Exp 202412 is the stronger model overall, scoring 38.6 to 33.7 on the Noometry Index.
Is o1-mini or Step 2 16k Exp 202412 better for coding?
Step 2 16k Exp 202412 scores higher on coding benchmarks: 37.9 versus 35.1 in the Noometry coding category.
How many benchmarks do o1-mini and Step 2 16k Exp 202412 share?
12 benchmarks have published results for both models. o1-mini has 39 scored results on Noometry and Step 2 16k Exp 202412 has 12.